var array = ['helloword',"HI chentao"]
// 正序输出数组中的单词
var stringTemp = array.join("...")
var stringTemp1 = array.toString()
console.log(stringTemp) //helloword...HI chentao
console.log(stringTemp1)//helloword,HI chentao
//倒叙输出
var stringTemp2 = array.reverse().toString()
console.log(stringTemp2)